Control method and control device for adding flocculant to coal slime water

Abstract

The present application provides a control method for adding flocculants to coal slurry water and a control device thereof, the method comprising: first, obtaining the feed concentration, feed flow rate and target overflow concentration of the coal slurry water in real time, wherein the feed concentration is used to characterize the concentration of the coal slurry water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slurry water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slurry water is treated by the concentrator; then, determining the target addition amount of the flocculant at least according to the feed concentration, feed flow rate and target overflow concentration; finally, controlling the addition of the target addition amount of flocculant to the concentrator so that the target overflow concentration of the clarified layer after the addition of the flocculant meets the predetermined range. The method ensures that the accuracy of the target addition amount is high, so that the flocculation effect after adding the flocculant according to the target addition amount is good, and ensures that the accuracy and real-time performance of the control of adding flocculants to coal slurry water are good.

Description

Technical Field

[0001] The present application relates to the field of coal, and in particular to a control method for adding flocculants into coal sludge water, a control device thereof, a computer-readable storage medium, a processor, and a control system thereof. Background Art

[0002] Concentration is to increase the concentration of coal sludge water to the required level, and at the same time, the coal sludge is graded according to a certain particle size to meet the requirements of subsequent processes (such as flotation, filtration, coal sludge recovery screen, shaking table, etc.) for feed concentration and particle size. Coal sludge settles in the water medium due to gravity. According to the difference in terminal sedimentation velocity, the coal sludge is graded according to a certain particle size. The terminal sedimentation velocity refers to the relative movement speed between particles in free sedimentation and the medium when gravity or centrifugal force is equal to the resistance to movement of the medium. The method for measuring turbidity is to divert part of the water sample from a representative coal sludge clarified water pipeline, measure it through a turbidity transmitter, and obtain the measured value by comparing the measured water sample with the blank water sample.

[0003] The feed properties of the concentrator include the material composition and particle size composition of the coal slurry. Different coal slurry properties theoretically require different reagent conditions. The extended colloid chemistry theory believes that whether the coal slurry particles can flocculate depends on the three forces between the particles: van der Waals force, electrostatic force and hydrophobic force. The van der Waals force is an attractive force. The surface of coal slurry particles usually carries a negative charge, so static electricity manifests as a repulsive force. Due to the difference in surface hydrophobicity between coal and clay minerals, coal usually has an attractive force while clay minerals have a repulsive force. Under certain conditions, the sum of the three forces is expressed as Gravitational forces cause particles to adhere, otherwise they do not adhere. The total force between coal slime particles is related to the distance between particles. When the distance between particles is very far (>200nm), van der Waals attraction plays a major role. At medium distances (2-200nm), electrostatic repulsion (coal slime and clay particles are mostly negatively charged) plays a dominant role, while hydrophobic forces play a dominant role at smaller distances (<2nm). Even if particles can theoretically adhere, they need to overcome electrostatic forces and do work under various dynamic forces to cross the electrostatic energy barrier before they can adhere. An important role of the agent is to reduce the surface potential of the particles, reduce the energy barrier, and make the particles easy to flocculate.

[0004] From the above, it can be seen that there is currently a problem of being unable to clearly define the factors and laws that affect the flocculation and sedimentation of coal sludge water, and it is impossible to implement real-time and precise control of the coal sludge water concentration process to the greatest extent.

[0005] The above information disclosed in the background technology section is only used to enhance the understanding of the background technology of the technology described in this article. Therefore, the background technology may contain certain information that does not form the prior art known in this country for those skilled in the art. Summary of the invention

[0006] The main purpose of the present application is to provide a control method for adding flocculants to coal slime water, a control device thereof, a computer-readable storage medium, a processor and a control system thereof, so as to solve the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the factors affecting the flocculation and sedimentation of coal slime water.

[0007] According to one aspect of an embodiment of the present invention, a control method for adding flocculants into coal sludge water is provided, the method comprising: acquiring in real time a feed concentration, a feed flow rate and a target overflow concentration of the coal sludge water, the feed concentration being used to characterize the concentration of the coal sludge water before entering a concentrator, the feed flow rate being used to characterize the flow rate of the coal sludge water before entering the concentrator, and the target overflow concentration being used to characterize the ratio of solids to water in a clarified layer obtained after the coal sludge water is treated by the concentrator; determining a target addition amount of the flocculant based at least on the feed concentration, the feed flow rate and the target overflow concentration; and controlling the addition of the target addition amount of the flocculant to the concentrator so that the target overflow concentration of the clarified layer after the addition of the flocculant satisfies a predetermined range.

[0008] Optionally, the target addition amount of the flocculant is determined at least based on the feed concentration, the feed flow rate and the target overflow concentration, including: determining the basic addition amount of the flocculant at least based on the feed concentration and the feed flow rate; obtaining the corresponding relationship between the overflow concentration of the coal slurry water and the addition amount of the flocculant; determining the addition amount corresponding to the overflow concentration that is the same as the target overflow concentration as the predetermined addition amount based on the target overflow concentration and the corresponding relationship; and determining the sum of the basic addition amount and the predetermined addition amount as the target addition amount.

[0009] Optionally, when the target overflow concentration is greater than a first threshold, the predetermined addition amount is a positive number, and the first threshold is the maximum value of the predetermined range; when the target overflow concentration is less than a second threshold, the predetermined addition amount is a negative number, and the second threshold is the minimum value of the predetermined range.

[0010] Optionally, the basic addition amount of the flocculant is determined at least according to the feed concentration and the feed flow rate, including: obtaining a first correction coefficient, a second correction coefficient, the configuration concentration of the flocculant and the optimal dosing value of the flocculant, wherein the first correction coefficient is used to characterize a coefficient related to the target overflow concentration, the second correction coefficient is a coefficient for correcting the difference between the actual basic addition amount and the theoretical basic addition amount, the configuration concentration is used to characterize the concentration value of the flocculant, and the optimal dosing value is determined according to the feed concentration; determining the basic addition amount Among them, q x is the optimal dosing value, Cm is the feed concentration, W m is the feed flow rate, C x is the configuration concentration, D is the first correction coefficient, and K is the second correction coefficient.

[0011] Optionally, obtaining the optimal dosing value includes: obtaining multiple groups of historical dosing values, historical feed concentrations and corresponding historical concentration efficiencies; and determining that when the feed concentration is equal to the historical feed concentration, the historical dosing value with the highest concentration efficiency is the optimal dosing value.

[0012] Optionally, after controlling the addition of the target amount of the flocculant to the concentrator, the method further includes: obtaining the underflow concentration, the underflow solid recovery rate and the underflow liquid mismatch rate, wherein the underflow concentration is used to characterize the concentration of the sedimentation layer after the concentrator performs the concentrating treatment, the underflow solid recovery rate is used to characterize the percentage of the solid amount in the sedimentation layer after the coal sludge water is treated by the concentrator to the solid amount in the feed, and the underflow liquid mismatch rate is used to characterize the percentage of the liquid amount in the sedimentation layer after the concentrating treatment by the concentrator to the liquid amount in the feed; determining the difference between the underflow solid recovery rate and the underflow liquid mismatch rate as the concentration efficiency; determining the clarification coefficient Wherein, C is the feed concentration, and C0 is the target overflow concentration.

[0013] According to another aspect of an embodiment of the present invention, a control device for adding flocculants to coal sludge water is also provided, the device comprising a first acquisition unit, a first determination unit and a control unit, wherein the first acquisition unit is used to acquire the feed concentration, feed flow rate and target overflow concentration of the coal sludge water in real time, the feed concentration is used to characterize the concentration of the coal sludge water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal sludge water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal sludge water is treated by the concentrator; the first determination unit is used to determine the target addition amount of the flocculant based on at least the feed concentration, the feed flow rate and the target overflow concentration; the control unit is used to control the addition of the target addition amount of the flocculant to the concentrator, so that the target overflow concentration of the clarified layer after the addition of the flocculant satisfies a predetermined range.

[0014] According to another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein the program is used to execute any one of the methods described.

[0015] According to yet another aspect of the embodiments of the present invention, a processor is provided, wherein the processor is used to run a program, wherein any one of the methods is executed when the program is run.

[0016] According to another aspect of an embodiment of the present invention, a control system for adding flocculants to coal sludge water is provided, the control system comprising a controller, a first flowmeter, a first concentration meter, a turbidity meter and an adding device, wherein the controller is used to execute any one of the methods described; the first flowmeter is located on the pipeline before the inlet of the concentrator, the first flowmeter is used to provide a feed flow rate, and the feed flow rate is used to characterize the flow rate of the coal sludge water before entering the concentrator; the first concentration meter is located on the pipeline before the inlet of the concentrator, the first concentration meter is used to provide a feed concentration, and the feed concentration is used to characterize the concentration of the coal sludge water before entering the concentrator; the turbidity meter is located in the concentrator, the turbidity meter is used to provide a target overflow concentration, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal sludge water is treated by the concentrator; the adding device is located on another pipeline before the inlet of the concentrator, the adding device is connected to the controller and the concentrator respectively, and the adding device is used to add a target addition amount of flocculant to the concentrator.

[0017] Optionally, the adding device includes a second flow meter and an electric regulating valve, wherein the second flow meter is used to provide the flow rate of the flocculant; the electric regulating valve is used to adjust the opening angle of the valve according to the target addition amount so that the flow rate of the flocculant entering the concentrator is the target addition amount.

[0018] Optionally, the control system further comprises a second concentration meter, which is located on a pipeline corresponding to an underflow outlet of the concentrator, and is used to provide an underflow concentration, and the underflow concentration is used to characterize the concentration of the sediment layer after the concentrator performs a concentrating process.

[0019] In an embodiment of the present invention, in the control method for adding flocculants into the coal sludge water, first, the feed concentration, feed flow rate and target overflow concentration of the coal sludge water are obtained in real time, wherein the feed concentration is used to characterize the concentration of the coal sludge water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal sludge water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal sludge water is treated by the concentrator; then, the target addition amount of the flocculant is determined based on at least the feed concentration, the feed flow rate and the target overflow concentration; finally, the flocculant of the target addition amount is controlled to be added to the concentrator so that the target overflow concentration of the clarified layer after the addition of the flocculant satisfies a predetermined range. Compared with the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, the control method for adding flocculants to the coal sludge water of the present application obtains the feed concentration, the feed flow rate and the target overflow concentration in real time, and then determines the target addition amount at least based on the feed concentration, the feed flow rate and the overflow concentration, so that the target addition amount is determined at least based on the feed properties of the coal sludge water and the overflow concentration after flocculation treatment, ensuring that the target addition amount is determined not only based on the properties of the coal sludge water before entering the concentrator, but also based on the properties of the coal sludge water after being treated by the concentrator, solving the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, ensuring that the accuracy of the target addition amount is high, so that the flocculation effect after adding the flocculant according to the target addition amount is better, and ensuring the accuracy and real-time performance of the control of adding flocculants to the coal sludge water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 A schematic flow chart of a control method for adding flocculants to coal slime water according to an embodiment of the present application is shown;

[0022] Figure 2 A schematic diagram of a control device for adding flocculants to coal sludge water according to an embodiment of the present application is shown;

[0023] Figure 3 A control flow chart of adding flocculants to coal slime water according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be intermediate elements. Moreover, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element through a third element.

[0028] As mentioned in the background technology, the prior art has the problem that it is impossible to clearly define the factors affecting the flocculation and sedimentation of coal sludge water, resulting in the inability to accurately control it. In order to solve the above problem, in a typical embodiment of the present application, a control method for adding flocculants to coal sludge water, a control device thereof, a computer-readable storage medium, a processor and a control system thereof are provided.

[0029] According to an embodiment of the present application, a control method for adding flocculants into coal slime water is provided.

[0030] Figure 1 FIG. 1 is a flow chart of a control method for adding flocculants to coal sludge water according to an embodiment of the present application. Figure 1 As shown, the method comprises the following steps:

[0031] Step S101, obtaining in real time the feed concentration, feed flow rate and target overflow concentration of the coal slurry water, wherein the feed concentration is used to characterize the concentration of the coal slurry water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slurry water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slurry water is processed by the concentrator;

[0032] Step S102, determining a target addition amount of the flocculant at least according to the feed concentration, the feed flow rate and the target overflow concentration;

[0033] Step S103, controlling the addition of the target amount of the flocculant into the concentrator, so that the target overflow concentration of the clarified layer after the addition of the flocculant meets a predetermined range.

[0034] In the control method for adding flocculants to the above-mentioned coal sludge water, first, the feed concentration, feed flow rate and target overflow concentration of the coal sludge water are obtained in real time, wherein the feed concentration is used to characterize the concentration of the above-mentioned coal sludge water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the above-mentioned coal sludge water before entering the above-mentioned concentrator, and the above-mentioned target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the above-mentioned coal sludge water is treated by the above-mentioned concentrator; then, the target addition amount of the above-mentioned flocculant is determined based on at least the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned target overflow concentration; finally, the above-mentioned flocculant of the above-mentioned target addition amount is controlled to be added to the above-mentioned concentrator, so that the above-mentioned target overflow concentration of the above-mentioned clarified layer after the addition of the above-mentioned flocculant satisfies a predetermined range. Compared with the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, the control method for adding flocculants to the coal sludge water of the present application obtains the feed concentration, the feed flow rate and the target overflow concentration in real time, and then determines the target addition amount at least based on the feed concentration, the feed flow rate and the overflow concentration, so that the target addition amount is determined at least based on the feed properties of the coal sludge water and the overflow concentration after flocculation treatment, ensuring that the target addition amount is determined not only based on the properties of the coal sludge water before entering the concentrator, but also based on the properties of the coal sludge water after being treated by the concentrator, solving the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, ensuring that the target addition amount has high accuracy, so that the flocculation effect after adding the flocculant according to the target addition amount is better, and ensuring the accuracy and real-time performance of the control of adding flocculants to the coal sludge water.

[0035] In a specific embodiment, not only the target overflow concentration can be used to characterize the effect of the coal slime water after being treated by the concentrator, but also the interface information of the clarified layer of the concentrator tank can be used to characterize the effect of the coal slime water after being treated by the concentrator, wherein the interface information is mainly completed through interface instrument testing. Of course, the target overflow concentration and the interface information can also be used to jointly determine the effect of the coal slime water after being treated by the concentrator. At present, the target overflow concentration is mainly used to characterize the effect of the coal slime water after being treated by the concentrator.

[0036] According to a specific embodiment of the present application, the target addition amount of the flocculant is determined at least according to the feed concentration, the feed flow rate and the target overflow concentration, including: determining the basic addition amount of the flocculant at least according to the feed concentration and the feed flow rate; obtaining the corresponding relationship between the overflow concentration of the coal slurry water and the addition amount of the flocculant; determining the addition amount corresponding to the overflow concentration that is the same as the target overflow concentration as the predetermined addition amount according to the target overflow concentration and the corresponding relationship; determining the sum of the basic addition amount and the predetermined addition amount as the target addition amount. First, the basic addition amount is determined by the feed concentration and the feed flow rate, that is, the basic addition amount is determined according to the feed properties of the coal sludge water before entering the concentrator, and then the corresponding relationship between the overflow concentration and the addition amount of the flocculant is obtained to determine the addition amount corresponding to the overflow concentration that is the same as the target overflow concentration as the predetermined addition amount, that is, the predetermined addition amount is determined according to the overflow concentration after being treated by the concentrator and the corresponding relationship determined in the early stage, so that the predetermined addition amount is determined according to the overflow concentration and historical experience, which ensures that the accuracy of the predetermined addition amount is high, and further ensures that the accuracy of the target addition amount determined according to the basic addition amount and the predetermined addition amount is high, so that the target overflow concentration after adding the flocculant according to the target addition amount meets the predetermined range, which further ensures the accuracy and real-time performance of the control of adding flocculant to the coal sludge water.

[0037] In a specific embodiment, according to the basic addition amount, the target overflow concentration and the corresponding relationship, the final target addition amount is determined mainly through PID.

[0038] In order to further ensure the accuracy of the control of adding flocculants to the above-mentioned coal sludge water, according to another specific embodiment of the present application, when the above-mentioned target overflow concentration is greater than the first threshold value, the above-mentioned predetermined addition amount is a positive number, and the above-mentioned first threshold value is the maximum value of the above-mentioned predetermined range; when the above-mentioned target overflow concentration is less than the second threshold value, the above-mentioned predetermined addition amount is a negative number, and the above-mentioned second threshold value is the minimum value of the above-mentioned predetermined range. In the case where the target overflow concentration is greater than the maximum value of the predetermined range, the predetermined addition amount is a positive number, so that the target addition amount determined according to the predetermined addition amount and the basic addition amount is greater than the basic addition amount, ensuring that after the flocculant is added according to the target addition amount, the target overflow concentration after being treated by the concentrator satisfies the predetermined range. In the case where the target overflow concentration is less than the minimum value of the predetermined range, the predetermined addition amount is a negative number, so that the target addition amount determined according to the predetermined addition amount and the basic addition amount is less than the basic addition amount, ensuring that after the flocculant is added according to the target addition amount, the target overflow concentration after being treated by the concentrator satisfies the predetermined range, further ensuring that the accuracy of the control of the addition of flocculant to the coal sludge water is good.

[0039] In order to further ensure that the control accuracy of adding flocculants to the above-mentioned coal sludge water is good, according to another specific embodiment of the present application, the basic addition amount of the above-mentioned flocculant is determined at least according to the above-mentioned feed concentration and the above-mentioned feed flow rate, including: obtaining a first correction coefficient, a second correction coefficient, the configuration concentration of the above-mentioned flocculant and the optimal dosing value of the above-mentioned flocculant, wherein the above-mentioned first correction coefficient is used to characterize the coefficient related to the above-mentioned target overflow concentration, the above-mentioned second correction coefficient is a coefficient for correcting the difference between the actual basic addition amount and the theoretical basic addition amount, the above-mentioned configuration concentration is used to characterize the concentration value of the above-mentioned flocculant, and the above-mentioned optimal dosing value is determined according to the above-mentioned feed concentration; determine the above-mentioned basic addition amount Among them, q x is the above optimal dosing value, C m is the above feed concentration, W m is the above feed flow rate, C x is the above configuration concentration, D is the above first correction coefficient, and K is the above second correction coefficient. By obtaining the above first correction coefficient, the above second correction coefficient, the above configuration concentration and the above optimal dosing value, and then according to the above first correction coefficient, the above second correction coefficient, the above configuration concentration, the above feed concentration, the above feed flow rate and the above optimal dosing value, the above basic addition amount is determined as follows: The accuracy of the above-mentioned basic addition amount is ensured to be high, and the accuracy of the above-mentioned target addition amount determined according to the above-mentioned basic addition amount and the above-mentioned predetermined addition amount is further ensured to be high, so that the above-mentioned target overflow concentration after adding the above-mentioned flocculant according to the above-mentioned target addition amount satisfies the above-mentioned predetermined range, and the accuracy and real-time performance of the control of the addition of flocculant to the above-mentioned coal sludge water are further ensured.

[0040] In a specific embodiment, the above-mentioned configuration concentration is generally 1 / 1000 to 5 / 1000, and at the initial stage of operation of the above-mentioned concentrator, the above-mentioned first correction coefficient and the above-mentioned second correction coefficient are both set to 1. Subsequently, by collecting data on the online operation parameters and adopting a self-learning method, the optimized above-mentioned first correction coefficient and the above-mentioned second correction coefficient are obtained.

[0041] Specifically, the first correction coefficient is obtained through experiments, and the second correction coefficient is obtained during industrial commissioning and operation. Both the first correction coefficient and the second correction coefficient are constants corresponding to when the concentrator has a better concentrating effect.

[0042] In a specific embodiment, not only can the feed properties of the above-mentioned coal slurry water be determined by real-time detection of the above-mentioned feed concentration and the above-mentioned feed flow rate, because the properties of the coal slurry water depend to a large extent on the properties of the raw coal, but also data such as raw coal ash content, washing volume, washing process, and gangue discharge system start and stop conditions can be collected, and the time required for the delayed coal to be conveyed from the raw coal belt to the above-mentioned concentrator can be collected as the property parameters of the coal slurry water feed for an operation cycle, including the above-mentioned feed concentration and the above-mentioned feed flow rate, and then the least squares support vector machine model whose parameters are optimized by particle swarm is used to establish a relationship model between the properties of the washed raw coal and the coal slurry concentrator feed, which is used to predict the feed properties of the above-mentioned coal slurry water, and determine the above-mentioned basic dosage according to the predicted feed properties of the above-mentioned coal slurry water. Specifically, it is also possible to optimize the learning parameters in the machine learning process based on the support vector machine model and in combination with intelligent algorithms such as rough set algorithm, immune algorithm, particle swarm algorithm, genetic algorithm, etc., and optimize the parameters through particle swarm algorithm to obtain a better algorithm model.

[0043] Of course, the algorithm can not only predict the feed properties of the above-mentioned coal slurry water, but also predict the concentration effect of the above-mentioned coal slurry water after being treated by the above-mentioned concentrator. According to the data collection and data processing of the concentrator feed parameters and the concentration effect indicators, the connection between the concentrator feed and the concentration effect can be established. Through the association of these two links, the concentration process can be predicted to provide a reference basis for precise dosing. Similarly, artificial intelligence modeling of the concentrator feed parameters (the above-mentioned feed concentration and the above-mentioned feed flow rate), dosing conditions and concentration effects (interface height and the above-mentioned target overflow concentration) can be performed to obtain a prediction model for the dosage.

[0044] According to a specific embodiment of the present application, after controlling the addition of the above-mentioned flocculant in the above-mentioned target addition amount to the above-mentioned concentrator, the above-mentioned method also includes: obtaining the underflow concentration, the underflow solid recovery rate and the underflow liquid mismatch rate, wherein the above-mentioned underflow concentration is used to characterize the concentration of the sedimentation layer after the above-mentioned concentrator performs the concentration treatment, the above-mentioned underflow solid recovery rate is used to characterize the percentage of the solid amount in the above-mentioned sedimentation layer after the above-mentioned coal sludge water is treated by the above-mentioned concentrator to the solid amount in the feed, and the above-mentioned underflow liquid mismatch rate is used to characterize the percentage of the liquid amount in the above-mentioned sedimentation layer after the above-mentioned concentrator performs the concentration treatment to the liquid amount in the feed; determining the difference between the above-mentioned underflow solid recovery rate and the above-mentioned underflow liquid mismatch rate as the concentration efficiency; determining the clarification coefficient Wherein, C is the feed concentration, and C0 is the target overflow concentration. By obtaining the underflow concentration, the solid recovery rate, and the underflow liquid mismatch rate, the difference between the underflow solid recovery rate and the underflow liquid mismatch rate is determined as the concentration efficiency, and the clarification coefficient is determined according to the feed concentration and the target overflow concentration. It is ensured that the underflow concentration, the concentration efficiency and the clarification coefficient can be obtained, so that the concentration effect of the concentrator can be judged according to the underflow concentration, the concentration efficiency and the clarification coefficient.

[0045] Specifically, the underflow concentration is directly measured by a concentration meter installed on the pipeline corresponding to the underflow of the concentrator. The underflow solid recovery rate is in, a is the feed percentage concentration, b is the overflow percentage concentration, c is the underflow percentage concentration, and the underflow liquid mismatch rate is That is, the underflow solid recovery rate and the underflow liquid mismatch rate are determined through the online data of the feed concentration, the target overflow concentration and the underflow concentration, thereby ensuring that the concentration efficiency and the clarification coefficient can be determined, so that the concentration effect of the concentrator can be evaluated in real time through the indicators of the underflow concentration, the concentration efficiency and the clarification coefficient.

[0046] According to another specific embodiment of the present application, obtaining the optimal dosing value includes: obtaining multiple groups of historical dosing values, historical feed concentrations, and corresponding historical concentration efficiencies; determining that when the feed concentration is equal to the historical feed concentration, the historical dosing value with the highest concentration efficiency is the optimal dosing value. By obtaining multiple groups of the historical dosing values, the historical feed concentrations, and the corresponding historical concentration efficiencies, and determining that when the historical feed concentration is the same as the feed concentration obtained in real time, the historical dosing value with the highest historical concentration efficiency is the optimal dosing value, it is ensured that when the feed concentration is determined, the historical concentration efficiency corresponding to the optimal dosing value obtained is the highest, and it is ensured that the concentration efficiency of the basic addition amount determined according to the optimal dosing value is high.

[0047] Specifically, the control process of adding flocculants to the above-mentioned coal slime water provides a method to verify and optimize the model of the above-mentioned target addition amount. In view of possible control lag problems, control optimization is planned to implement real-time and precise control to the greatest extent. The above-mentioned concentration effect can also be predicted through an algorithm model to provide a reference basis for precise dosing.

[0048] The embodiment of the present application also provides a control device for adding flocculants to coal slime water. It should be noted that the control device for adding flocculants to coal slime water in the embodiment of the present application can be used to execute the control method for adding flocculants to coal slime water provided in the embodiment of the present application. The control device for adding flocculants to coal slime water provided in the embodiment of the present application is introduced below.

[0049] Figure 2 Schematic diagram of a control device for adding flocculants to coal sludge water according to an embodiment of the present application. Figure 2 As shown, the device includes a first acquisition unit 10, a first determination unit 20 and a control unit 30, wherein the first acquisition unit 10 is used to obtain the feed concentration, feed flow rate and target overflow concentration of the coal slurry water in real time, the feed concentration is used to characterize the concentration of the coal slurry water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slurry water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slurry water is treated by the concentrator; the first determination unit 20 is used to determine the target addition amount of the flocculant based on at least the feed concentration, the feed flow rate and the target overflow concentration; the control unit 30 is used to control the addition of the target addition amount of the flocculant to the concentrator, so that the target overflow concentration of the clarified layer after the addition of the flocculant meets the predetermined range.

[0050] In the control device for adding flocculant to the above-mentioned coal sludge water, the feed concentration, feed flow rate and target overflow concentration of the coal sludge water are acquired in real time through the above-mentioned first acquisition unit, the above-mentioned feed concentration is used to characterize the concentration of the above-mentioned coal sludge water before entering the concentrator, the above-mentioned feed flow rate is used to characterize the flow rate of the above-mentioned coal sludge water before entering the above-mentioned concentrator, and the above-mentioned target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the above-mentioned coal sludge water is treated by the above-mentioned concentrator; the above-mentioned first determination unit determines the target addition amount of the above-mentioned flocculant based on at least the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned target overflow concentration; the above-mentioned control unit controls the addition of the above-mentioned flocculant of the above-mentioned target addition amount to the above-mentioned concentrator, so that the above-mentioned target overflow concentration of the above-mentioned clarified layer after the addition of the above-mentioned flocculant satisfies the predetermined range. Compared with the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, the control device for adding flocculant to the coal sludge water of the present application obtains the feed concentration, the feed flow rate and the target overflow concentration in real time, and then determines the target addition amount at least based on the feed concentration, the feed flow rate and the overflow concentration, so that the target addition amount is determined at least based on the feed properties of the coal sludge water and the overflow concentration after flocculation treatment, ensuring that the target addition amount is determined not only based on the properties of the coal sludge water before entering the concentrator, but also based on the properties of the coal sludge water after being treated by the concentrator, solving the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, ensuring that the target addition amount has high accuracy, so that the flocculation effect after adding the flocculant according to the target addition amount is better, and ensuring the accuracy and real-time performance of the control of adding flocculants to the coal sludge water.

[0051] In a specific embodiment, not only the target overflow concentration can be used to characterize the effect of the coal slime water after being treated by the concentrator, but also the interface information of the clarified layer of the concentrator tank can be used to characterize the effect of the coal slime water after being treated by the concentrator, wherein the interface information is mainly completed through interface instrument testing. Of course, the target overflow concentration and the interface information can also be used to jointly determine the effect of the coal slime water after being treated by the concentrator. At present, the target overflow concentration is mainly used to characterize the effect of the coal slime water after being treated by the concentrator.

[0052] According to a specific embodiment of the present application, the above-mentioned first determination unit includes a first determination module, an acquisition module, a second determination module and a third determination module, wherein the above-mentioned first determination module is used to determine the basic addition amount of the above-mentioned flocculant based on at least the above-mentioned feed concentration and the above-mentioned feed flow rate; the above-mentioned acquisition module is used to obtain the corresponding relationship between the overflow concentration of the above-mentioned coal sludge water and the addition amount of the above-mentioned flocculant; the above-mentioned second determination module is used to determine the above-mentioned addition amount corresponding to the above-mentioned overflow concentration which is the same as the above-mentioned target overflow concentration as the predetermined addition amount according to the above-mentioned target overflow concentration and the above-mentioned corresponding relationship; the above-mentioned third determination module is used to determine that the sum of the above-mentioned basic addition amount and the above-mentioned predetermined addition amount is the above-mentioned target addition amount. First, the basic addition amount is determined by the feed concentration and the feed flow rate, that is, the basic addition amount is determined according to the feed properties of the coal sludge water before entering the concentrator, and then the corresponding relationship between the overflow concentration and the addition amount of the flocculant is obtained to determine the addition amount corresponding to the overflow concentration that is the same as the target overflow concentration as the predetermined addition amount, that is, the predetermined addition amount is determined according to the overflow concentration after being treated by the concentrator and the corresponding relationship determined in the early stage, so that the predetermined addition amount is determined according to the overflow concentration and historical experience, which ensures that the accuracy of the predetermined addition amount is high, and further ensures that the accuracy of the target addition amount determined according to the basic addition amount and the predetermined addition amount is high, so that the target overflow concentration after adding the flocculant according to the target addition amount meets the predetermined range, which further ensures the accuracy and real-time performance of the control of adding flocculant to the coal sludge water.

[0053] In a specific embodiment, according to the basic addition amount, the target overflow concentration and the corresponding relationship, the final target addition amount is determined mainly through PID.

[0054] In order to further ensure the accuracy of the control of adding flocculants to the above-mentioned coal sludge water, according to another specific embodiment of the present application, when the above-mentioned target overflow concentration is greater than the first threshold value, the above-mentioned predetermined addition amount is a positive number, and the above-mentioned first threshold value is the maximum value of the above-mentioned predetermined range; when the above-mentioned target overflow concentration is less than the second threshold value, the above-mentioned predetermined addition amount is a negative number, and the above-mentioned second threshold value is the minimum value of the above-mentioned predetermined range. In the case where the target overflow concentration is greater than the maximum value of the predetermined range, the predetermined addition amount is a positive number, so that the target addition amount determined according to the predetermined addition amount and the basic addition amount is greater than the basic addition amount, ensuring that after the flocculant is added according to the target addition amount, the target overflow concentration after being treated by the concentrator satisfies the predetermined range. In the case where the target overflow concentration is less than the minimum value of the predetermined range, the predetermined addition amount is a negative number, so that the target addition amount determined according to the predetermined addition amount and the basic addition amount is less than the basic addition amount, ensuring that after the flocculant is added according to the target addition amount, the target overflow concentration after being treated by the concentrator satisfies the predetermined range, further ensuring that the accuracy of the control of the addition of flocculant to the coal sludge water is good.

[0055] In order to further ensure the accuracy of the control of adding flocculants to the above-mentioned coal sludge water, according to another specific embodiment of the present application, the above-mentioned first determination module includes an acquisition submodule and a determination submodule, wherein the above-mentioned acquisition submodule is used to obtain a first correction coefficient, a second correction coefficient, the configuration concentration of the above-mentioned flocculant and the optimal dosing value of the above-mentioned flocculant, wherein the above-mentioned first correction coefficient is used to characterize the coefficient related to the above-mentioned target overflow concentration, the above-mentioned second correction coefficient is a coefficient for correcting the difference between the actual basic addition amount and the theoretical basic addition amount, the above-mentioned configuration concentration is used to characterize the concentration value of the above-mentioned flocculant, and the above-mentioned optimal dosing value is determined according to the above-mentioned feed concentration; the above-mentioned determination submodule is used to determine the above-mentioned basic addition amount Among them, q x is the above optimal dosing value, C m is the above feed concentration, W m is the above feed flow rate, C x is the above configuration concentration, D is the above first correction coefficient, and K is the above second correction coefficient. By obtaining the above first correction coefficient, the above second correction coefficient, the above configuration concentration and the above optimal dosing value, and then according to the above first correction coefficient, the above second correction coefficient, the above configuration concentration, the above feed concentration, the above feed flow rate and the above optimal dosing value, the above basic addition amount is determined as follows: The accuracy of the above-mentioned basic addition amount is ensured to be high, and the accuracy of the above-mentioned target addition amount determined according to the above-mentioned basic addition amount and the above-mentioned predetermined addition amount is further ensured to be high, so that the above-mentioned target overflow concentration after adding the above-mentioned flocculant according to the above-mentioned target addition amount satisfies the above-mentioned predetermined range, and the accuracy and real-time performance of the control of the addition of flocculant to the above-mentioned coal sludge water are further ensured.

[0056] In a specific embodiment, the above-mentioned configuration concentration is generally 1 / 1000 to 5 / 1000, and at the initial stage of operation of the above-mentioned concentrator, the above-mentioned first correction coefficient and the above-mentioned second correction coefficient are both set to 1. Subsequently, by collecting data on the online operation parameters and adopting a self-learning method, the optimized above-mentioned first correction coefficient and the above-mentioned second correction coefficient are obtained.

[0057] Specifically, the first correction coefficient is obtained through experiments, and the second correction coefficient is obtained during industrial commissioning and operation. Both the first correction coefficient and the second correction coefficient are constants corresponding to when the concentrator has a better concentrating effect.

[0058] In a specific embodiment, not only can the feed properties of the above-mentioned coal slurry water be determined by real-time detection of the above-mentioned feed concentration and the above-mentioned feed flow rate, because the properties of the coal slurry water depend to a large extent on the properties of the raw coal, but also data such as raw coal ash content, washing volume, washing process, and gangue discharge system start and stop conditions can be collected, and the time required for the delayed coal to be conveyed from the raw coal belt to the above-mentioned concentrator can be collected as the property parameters of the coal slurry water feed for an operation cycle, including the above-mentioned feed concentration and the above-mentioned feed flow rate, and then the least squares support vector machine model whose parameters are optimized by particle swarm is used to establish a relationship model between the properties of the washed raw coal and the coal slurry concentrator feed, which is used to predict the feed properties of the above-mentioned coal slurry water, and determine the above-mentioned basic dosage according to the predicted feed properties of the above-mentioned coal slurry water. Specifically, it is also possible to optimize the learning parameters in the machine learning process based on the support vector machine model and in combination with intelligent algorithms such as rough set algorithm, immune algorithm, particle swarm algorithm, genetic algorithm, etc., and optimize the parameters through particle swarm algorithm to obtain a better algorithm model.

[0059] Of course, the algorithm can not only predict the feed properties of the above-mentioned coal slurry water, but also predict the concentration effect of the above-mentioned coal slurry water after being treated by the above-mentioned concentrator. According to the data collection and data processing of the concentrator feed parameters and the concentration effect indicators, the connection between the concentrator feed and the concentration effect can be established. Through the association of these two links, the concentration process can be predicted to provide a reference basis for precise dosing. Similarly, artificial intelligence modeling of the concentrator feed parameters (the above-mentioned feed concentration and the above-mentioned feed flow rate), dosing conditions and concentration effects (interface height and the above-mentioned target overflow concentration) can be performed to obtain a prediction model for the dosage.

[0060] According to a specific embodiment of the present application, the above-mentioned device also includes a second acquisition unit, a second determination unit and a third determination unit, wherein the above-mentioned second acquisition unit is used to obtain the underflow concentration, the underflow solid recovery rate and the underflow liquid mismatch rate after controlling the addition of the above-mentioned target addition amount of the above-mentioned flocculant to the above-mentioned concentrator, wherein the above-mentioned underflow concentration is used to characterize the concentration of the sedimentation layer after the above-mentioned concentrator performs concentrating treatment, the above-mentioned underflow solid recovery rate is used to characterize the percentage of the solid amount in the above-mentioned sedimentation layer after the above-mentioned coal slime water is treated by the above-mentioned concentrator to the solid amount in the feed, and the above-mentioned underflow liquid mismatch rate is used to characterize the percentage of the liquid amount in the above-mentioned sedimentation layer after the above-mentioned concentrator performs concentrating treatment to the liquid amount in the feed; the above-mentioned second determination unit is used to determine that the difference between the above-mentioned underflow solid recovery rate and the above-mentioned underflow liquid mismatch rate is the concentration efficiency; the above-mentioned third determination unit is used to determine the clarification coefficient Wherein, C is the feed concentration, and C0 is the target overflow concentration. By obtaining the underflow concentration, the solid recovery rate, and the underflow liquid mismatch rate, the difference between the underflow solid recovery rate and the underflow liquid mismatch rate is determined as the concentration efficiency, and the clarification coefficient is determined according to the feed concentration and the target overflow concentration. It is ensured that the underflow concentration, the concentration efficiency and the clarification coefficient can be obtained, so that the concentration effect of the concentrator can be judged according to the underflow concentration, the concentration efficiency and the clarification coefficient.

[0061] Specifically, the underflow concentration is directly measured by a concentration meter installed on the pipeline corresponding to the underflow of the concentrator. The underflow solid recovery rate is in, a is the feed percentage concentration, b is the overflow percentage concentration, c is the underflow percentage concentration, and the underflow liquid mismatch rate is That is, the underflow solid recovery rate and the underflow liquid mismatch rate are determined through the online data of the feed concentration, the target overflow concentration and the underflow concentration, thereby ensuring that the concentration efficiency and the clarification coefficient can be determined, so that the concentration effect of the concentrator can be evaluated in real time through the indicators of the underflow concentration, the concentration efficiency and the clarification coefficient.

[0062] According to another specific embodiment of the present application, the acquisition submodule is also used to acquire multiple groups of historical dosing values, historical feed concentrations, and corresponding historical concentration efficiencies; when the feed concentration is determined to be equal to the historical feed concentration, the historical dosing value with the highest concentration efficiency is the optimal dosing value. By acquiring multiple groups of historical dosing values, historical feed concentrations, and corresponding historical concentration efficiencies, and determining that when the historical feed concentration is the same as the feed concentration acquired in real time, the historical dosing value with the highest historical concentration efficiency is the optimal dosing value, it is ensured that when the feed concentration is determined, the historical concentration efficiency corresponding to the optimal dosing value obtained is the highest, and it is ensured that the concentration efficiency of the basic addition amount determined according to the optimal dosing value is high.

[0063] Specifically, the control process of adding flocculants to the above-mentioned coal slime water provides a method to verify and optimize the model of the above-mentioned target addition amount. In view of possible control lag problems, control optimization is planned to implement real-time and precise control to the greatest extent. The above-mentioned concentration effect can also be predicted through an algorithm model to provide a reference basis for precise dosing.

[0064] The control device for adding flocculants to the coal sludge water comprises a processor and a memory. The first acquisition unit, the first determination unit and the control unit are all stored in the memory as program units. The processor executes the program units stored in the memory to realize corresponding functions.

[0065] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the problem of the inability to accurately control the inability to clearly define the influencing factors of coal slurry flocculation and sedimentation in the prior art can be solved by adjusting the kernel parameters.

[0066] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0067] An embodiment of the present invention provides a computer-readable storage medium on which a program is stored. When the program is executed by a processor, the control method for adding flocculants to coal slime water is implemented.

[0068] An embodiment of the present invention provides a processor, and the processor is used to run a program, wherein the control method for adding flocculants to coal slime water is executed when the program is run.

[0069] An embodiment of the present invention provides a device, the device comprising a processor, a memory, and a program stored in the memory and executable on the processor, and when the processor executes the program, at least the following steps are implemented:

[0070] Step S101, obtaining in real time the feed concentration, feed flow rate and target overflow concentration of the coal slurry water, wherein the feed concentration is used to characterize the concentration of the coal slurry water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slurry water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slurry water is processed by the concentrator;

[0071] Step S102, determining a target addition amount of the flocculant at least according to the feed concentration, the feed flow rate and the target overflow concentration;

[0072] Step S103, controlling the addition of the target amount of the flocculant into the concentrator, so that the target overflow concentration of the clarified layer after the addition of the flocculant meets a predetermined range.

[0073] The devices in this article can be servers, PCs, PADs, mobile phones, etc.

[0074] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program for initializing at least the following method steps:

[0075] Step S101, obtaining in real time the feed concentration, feed flow rate and target overflow concentration of the coal slurry water, wherein the feed concentration is used to characterize the concentration of the coal slurry water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slurry water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slurry water is processed by the concentrator;

[0076] Step S102, determining a target addition amount of the flocculant at least according to the feed concentration, the feed flow rate and the target overflow concentration;

[0077] Step S103, controlling the addition of the target amount of the flocculant into the concentrator, so that the target overflow concentration of the clarified layer after the addition of the flocculant meets a predetermined range.

[0078] According to another typical embodiment of the present application, a control system for adding flocculants to coal sludge water is also provided, the control system comprising a controller, a first flowmeter, a first concentration meter, a turbidity meter and an adding device, wherein the controller is used to execute any one of the above methods; the first flowmeter is located on the pipeline before the inlet of the concentrator, the first flowmeter is used to provide a feed flow rate, and the feed flow rate is used to characterize the flow rate of the coal sludge water before entering the concentrator; the first concentration meter is located on the pipeline before the inlet of the concentrator, the first concentration meter is used to provide a feed concentration, and the feed concentration is used to characterize the concentration of the coal sludge water before entering the concentrator; the turbidity meter is located in the concentrator, the turbidity meter is used to provide a target overflow concentration, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal sludge water is treated by the concentrator; the adding device is located on another pipeline before the inlet of the concentrator, the adding device is connected to the controller and the concentrator respectively, and the adding device is used to add a target addition amount of flocculant to the concentrator.

[0079] The control system for adding flocculant to the above-mentioned coal slurry water comprises a controller, a first flowmeter, a first concentration meter, a turbidity meter and an adding device, wherein the above-mentioned controller is used to execute any one of the above-mentioned methods; the above-mentioned first flowmeter is located on the pipeline before the inlet of the concentrator, and the above-mentioned first flowmeter is used to provide a feed flow rate, and the above-mentioned feed flow rate is used to characterize the flow rate of the above-mentioned coal slurry water before entering the above-mentioned concentrator; the above-mentioned first concentration meter is located on the pipeline before the inlet of the above-mentioned concentrator, and the above-mentioned first concentration meter is used to provide a feed concentration, and the above-mentioned feed concentration is used to characterize the concentration of the above-mentioned coal slurry water before entering the above-mentioned concentrator; the above-mentioned turbidity meter is located in the above-mentioned concentrator, and the above-mentioned turbidity meter is used to provide a target overflow concentration, and the above-mentioned target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the above-mentioned coal slurry water is treated by the above-mentioned concentrator; the above-mentioned adding device is located on another pipeline before the inlet of the above-mentioned concentrator, and the above-mentioned adding device is connected to the above-mentioned controller and the above-mentioned concentrator respectively, and the above-mentioned adding device is used to add a target addition amount of flocculant to the above-mentioned concentrator. Compared with the problem in the prior art that the influencing factors of flocculation and sedimentation of coal sludge water cannot be clearly defined, resulting in the inability to accurately control, the control system for adding flocculants to the coal sludge water of the present application provides the above-mentioned feed flow rate through the above-mentioned first flowmeter, provides the above-mentioned feed concentration through the above-mentioned first concentration meter, provides the above-mentioned target overflow concentration through the above-mentioned turbidity meter, and then determines the above-mentioned target addition amount based on at least the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned overflow concentration, so that the above-mentioned target addition amount is determined at least based on the feed properties of the above-mentioned coal sludge water and the above-mentioned overflow concentration after flocculation treatment, ensuring that the above-mentioned target addition amount is determined not only based on the properties of the above-mentioned coal sludge water before entering the concentrator, but also based on the properties of the above-mentioned coal sludge water after being treated by the above-mentioned concentrator, and then the above-mentioned flocculant of the above-mentioned target addition amount is added to the above-mentioned concentrator through the above-mentioned adding device, which solves the problem in the prior art that the influencing factors of flocculation and sedimentation of coal sludge water cannot be clearly defined, and ensures that the accuracy of the above-mentioned target addition amount is high, so that the flocculation effect after adding the above-mentioned flocculant according to the above-mentioned target addition amount is better, and the accuracy and real-time performance of the control of adding flocculants to the above-mentioned coal sludge water are better.

[0080] In a specific embodiment, the first flow meter is an electromagnetic flow meter, and the first concentration meter is a slurry concentration meter.

[0081] Specifically, the controller is a centralized control system, which starts the automatic preparation process of the flocculant solution through remote control operation until a qualified solution is prepared. The existing flocculant dosing machine is a single-machine automated equipment. After the equipment is started, the mixing barrel automatically prepares the agent according to the preset water volume and the dosage of the flocculant. After the agent is prepared, the mixing barrel discharge valve discharges the agent into the liquid storage tank, and the mixing barrel enters the next agent preparation cycle, and then determines the target addition amount based on the basic addition amount and the predetermined addition amount. The predetermined addition amount is based on the deviation and change between the set concentration stratification interface and the real-time stratification interface, or the difference between the target overflow concentration and the predetermined range, to adjust the dosage of the concentration tank so that the flow rate of the flocculant entering the concentrator is the target addition amount.

[0082] According to a specific embodiment of the present application, the above-mentioned adding device includes a second flow meter and an electric regulating valve, wherein the above-mentioned second flow meter is used to provide the flow of the above-mentioned flocculant; the above-mentioned electric regulating valve is used to adjust the valve opening angle according to the above-mentioned target addition amount, so that the flow of the above-mentioned flocculant entering the above-mentioned concentrator is the above-mentioned target addition amount. The actual flow of the above-mentioned flocculant is measured in real time by the above-mentioned second flow meter, and the opening angle of the valve is adjusted according to the above-mentioned target addition amount by the above-mentioned electric regulating valve, which ensures that the flow of the above-mentioned flocculant entering the above-mentioned concentrator Zhou Jiangnan Chemical is the above-mentioned target addition amount, and further ensures that the control accuracy of the addition of flocculant to the above-mentioned coal sludge water is good.

[0083] In a specific embodiment, the flow rate of the flocculant entering the concentrator can also be adjusted by a frequency converter.

[0084] Specifically, the diameter of the electric regulating valve is the same as the diameter of the pipe where the electric regulating valve is located, and is used to accurately control the amount of flocculant added to the concentrator.

[0085] According to another specific embodiment of the present application, the control system further includes a second concentration meter, which is located on a pipeline corresponding to the underflow outlet of the concentrator, and is used to provide an underflow concentration, which is used to characterize the concentration of the sediment layer after the concentrator performs the concentrating treatment. The underflow concentration is provided by the second concentration meter, so that the concentrating effect of the concentrator can be judged in real time at least according to the underflow concentration.

[0086] In a specific embodiment, by adding a communication module, the first flow meter, the first concentration meter, the turbidity meter, the adding device and other equipment, the precise addition of the flocculant dosage of the control system is achieved. The communication module is added to incorporate the adding device and the related information of the concentrator into the centralized control system to achieve interlocking control. The dosage of the dosing machine is automatically adjusted according to the data fed back by the turbidity meter to achieve a closed-loop control effect. To ensure the flexibility and reliability of the system, the adding device will be set with two operating modes, namely automatic control and manual control. The mode can be switched by selection to prevent production from being affected by equipment failure.

[0087] Figure 3 This is the control flow chart for adding flocculants to the above-mentioned coal slime water, which will be described in detail below.

[0088] Real-time acquisition of the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned target overflow concentration of the coal slurry water;

[0089] Determining the target addition amount of the flocculant at least according to the feed concentration, the feed flow rate and the target overflow concentration;

[0090] Controlling the electric regulating valve so that the flow rate of the flocculant entering the concentrator is the target addition amount;

[0091] monitoring the target overflow concentration in real time, and if the target overflow concentration does not meet the predetermined range, cyclically determining the target addition amount according to the real-time target overflow concentration, so that the target overflow concentration of the clarified layer meets the predetermined range after the flocculant is added according to the target addition amount;

[0092] In addition, the concentrating effect of the concentrator is determined based on the underflow concentration, the concentrating efficiency, and the clarification coefficient.

[0093] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the above-mentioned units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0095] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0096] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0097] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0098] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0099] 1) In the control method for adding flocculants to the above-mentioned coal sludge water of the present application, first, the feed concentration, feed flow rate and target overflow concentration of the coal sludge water are obtained in real time, wherein the feed concentration is used to characterize the concentration of the above-mentioned coal sludge water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the above-mentioned coal sludge water before entering the above-mentioned concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the above-mentioned coal sludge water is treated by the above-mentioned concentrator; then, the target addition amount of the above-mentioned flocculant is determined based on at least the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned target overflow concentration; finally, the above-mentioned flocculant of the above-mentioned target addition amount is controlled to be added to the above-mentioned concentrator, so that the above-mentioned target overflow concentration of the above-mentioned clarified layer after the addition of the above-mentioned flocculant satisfies a predetermined range. Compared with the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, the control method for adding flocculants to the coal sludge water of the present application obtains the feed concentration, the feed flow rate and the target overflow concentration in real time, and then determines the target addition amount at least based on the feed concentration, the feed flow rate and the overflow concentration, so that the target addition amount is determined at least based on the feed properties of the coal sludge water and the overflow concentration after flocculation treatment, ensuring that the target addition amount is determined not only based on the properties of the coal sludge water before entering the concentrator, but also based on the properties of the coal sludge water after being treated by the concentrator, solving the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, ensuring that the target addition amount has high accuracy, so that the flocculation effect after adding the flocculant according to the target addition amount is better, and ensuring the accuracy and real-time performance of the control of adding flocculants to the coal sludge water.

[0100] 2) In the control device for adding flocculant to the above-mentioned coal sludge water of the present application, the feed concentration, feed flow rate and target overflow concentration of the coal sludge water are obtained in real time through the above-mentioned first acquisition unit, the above-mentioned feed concentration is used to characterize the concentration of the above-mentioned coal sludge water before entering the concentrator, the above-mentioned feed flow rate is used to characterize the flow rate of the above-mentioned coal sludge water before entering the above-mentioned concentrator, and the above-mentioned target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the above-mentioned coal sludge water is treated by the above-mentioned concentrator; the target addition amount of the above-mentioned flocculant is determined by the above-mentioned first determination unit at least according to the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned target overflow concentration; the above-mentioned control unit controls the addition of the above-mentioned flocculant of the above-mentioned target addition amount to the above-mentioned concentrator, so that the above-mentioned target overflow concentration of the above-mentioned clarified layer after the addition of the above-mentioned flocculant satisfies a predetermined range. Compared with the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, the control device for adding flocculant to the coal sludge water of the present application obtains the feed concentration, the feed flow rate and the target overflow concentration in real time, and then determines the target addition amount at least based on the feed concentration, the feed flow rate and the overflow concentration, so that the target addition amount is determined at least based on the feed properties of the coal sludge water and the overflow concentration after flocculation treatment, ensuring that the target addition amount is determined not only based on the properties of the coal sludge water before entering the concentrator, but also based on the properties of the coal sludge water after being treated by the concentrator, solving the problem in the prior art that precise control cannot be achieved due to the inability to clearly define the influencing factors of flocculation and sedimentation of coal sludge water, ensuring that the target addition amount has high accuracy, so that the flocculation effect after adding the flocculant according to the target addition amount is better, and ensuring the accuracy and real-time performance of the control of adding flocculants to the coal sludge water.

[0101] 3) The control system for adding flocculants to the above-mentioned coal sludge water of the present application comprises a controller, a first flowmeter, a first concentration meter, a turbidity meter and an adding device, wherein the controller is used to execute any one of the above-mentioned methods; the first flowmeter is located on the pipeline before the inlet of the concentrator, and the first flowmeter is used to provide a feed flow rate, and the feed flow rate is used to characterize the flow rate of the above-mentioned coal sludge water before entering the above-mentioned concentrator; the first concentration meter is located on the pipeline before the inlet of the above-mentioned concentrator, and the first concentration meter is used to provide a feed concentration, and the feed concentration is used to characterize the concentration of the above-mentioned coal sludge water before entering the above-mentioned concentrator; the turbidity meter is located in the above-mentioned concentrator, and the turbidity meter is used to provide a target overflow concentration, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the above-mentioned coal sludge water is treated by the above-mentioned concentrator; the adding device is located on another pipeline before the inlet of the above-mentioned concentrator, and the adding device is connected to the above-mentioned controller and the above-mentioned concentrator respectively, and the adding device is used to add a target amount of flocculant to the above-mentioned concentrator. Compared with the problem in the prior art that the influencing factors of flocculation and sedimentation of coal sludge water cannot be clearly defined, resulting in the inability to accurately control, the control system for adding flocculants to the coal sludge water of the present application provides the above-mentioned feed flow rate through the above-mentioned first flowmeter, provides the above-mentioned feed concentration through the above-mentioned first concentration meter, provides the above-mentioned target overflow concentration through the above-mentioned turbidity meter, and then determines the above-mentioned target addition amount based on at least the above-mentioned feed concentration, the above-mentioned feed flow rate and the above-mentioned overflow concentration, so that the above-mentioned target addition amount is determined at least based on the feed properties of the above-mentioned coal sludge water and the above-mentioned overflow concentration after flocculation treatment, ensuring that the above-mentioned target addition amount is determined not only based on the properties of the above-mentioned coal sludge water before entering the concentrator, but also based on the properties of the above-mentioned coal sludge water after being treated by the above-mentioned concentrator, and then the above-mentioned flocculant of the above-mentioned target addition amount is added to the above-mentioned concentrator through the above-mentioned adding device, which solves the problem in the prior art that the influencing factors of flocculation and sedimentation of coal sludge water cannot be clearly defined, and ensures that the accuracy of the above-mentioned target addition amount is high, so that the flocculation effect after adding the above-mentioned flocculant according to the above-mentioned target addition amount is better, and the accuracy and real-time performance of the control of adding flocculants to the above-mentioned coal sludge water are better.

[0102] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for adding flocculants to coal slime water, It is characterized in that The method comprises: Obtaining in real time the feed concentration, feed flow rate and target overflow concentration of the coal slime water, wherein the feed concentration is used to characterize the concentration of the coal slime water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slime water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slime water is treated by the concentrator; Determining a target addition amount of the flocculant at least according to the feed concentration, the feed flow rate and the target overflow concentration; controlling the target amount of the flocculant to be added to the concentrator so that the target overflow concentration of the clarified layer after the flocculant is added satisfies a predetermined range, Determining the target addition amount of the flocculant at least according to the feed concentration, the feed flow rate and the target overflow concentration includes: Determining the basic addition amount of the flocculant at least according to the feed concentration and the feed flow rate; Obtaining the corresponding relationship between the overflow concentration of the coal slurry and the added amount of the flocculant; According to the target overflow concentration and the corresponding relationship, determining the addition amount corresponding to the overflow concentration that is the same as the target overflow concentration as the predetermined addition amount; determining the sum of the basic addition amount and the predetermined addition amount as the target addition amount, Determining the basic addition amount of the flocculant at least according to the feed concentration and the feed flow rate includes: Obtaining a first correction coefficient, a second correction coefficient, the configuration concentration of the flocculant, and an optimal dosing value of the flocculant, wherein the first correction coefficient is used to characterize a coefficient related to the target overflow concentration, the second correction coefficient is a coefficient for correcting the difference between the actual basic addition amount and the theoretical basic addition amount, the configuration concentration is used to characterize the concentration value of the flocculant, and the optimal dosing value is determined according to the feed concentration; Determine the basic addition amount ,in, is the optimal dosing value, is the feed concentration, is the feed flow rate, For the configuration concentration, is the first correction coefficient, is the second correction coefficient, Obtain optimal dosing values, including: Obtain multiple sets of historical dosing values, historical feed concentrations and corresponding historical concentration efficiencies; When it is determined that the feed concentration is equal to the historical feed concentration, the historical dosing value with the highest historical concentration efficiency is the optimal dosing value, After controlling the addition of the target amount of the flocculant into the concentrator, the method further comprises: Obtaining the underflow concentration, underflow solid recovery rate and underflow liquid mismatch rate, wherein the underflow concentration is used to characterize the concentration of the sediment layer after the concentrator performs the concentrating treatment, the underflow solid recovery rate is used to characterize the percentage of the solid amount of the sediment layer after the coal slime water is treated by the concentrator to the solid amount in the feed, and the underflow liquid mismatch rate is used to characterize the percentage of the liquid amount of the sediment layer after the concentrator performs the concentrating treatment to the liquid amount in the feed; Determine the difference between the underflow solid recovery rate and the underflow liquid mismatch rate as the concentration efficiency; Determine the clarification factor , wherein C is the feed concentration, The target overflow concentration is taken as the target overflow concentration, and the concentration effect of the concentrator is evaluated according to the underflow concentration, the concentration efficiency and the clarification coefficient.

2. The method according to claim 1, It is characterized in that When the target overflow concentration is greater than a first threshold, the predetermined addition amount is a positive number, and the first threshold is a maximum value of the predetermined range; When the target overflow concentration is less than a second threshold, the predetermined addition amount is a negative number, and the second threshold is a minimum value of the predetermined range.

3. A control device for adding flocculants to coal sludge water, used to execute the method according to claim 1 or 2, It is characterized in that The device comprises: A first acquisition unit is used to acquire in real time the feed concentration, feed flow rate and target overflow concentration of the coal slime water, wherein the feed concentration is used to characterize the concentration of the coal slime water before entering the concentrator, the feed flow rate is used to characterize the flow rate of the coal slime water before entering the concentrator, and the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slime water is processed by the concentrator; A first determination unit, configured to determine a target addition amount of the flocculant at least according to the feed concentration, the feed flow rate, and the target overflow concentration; a control unit, configured to control the addition of the target amount of the flocculant to the concentrator, so that the target overflow concentration of the clarified layer after the flocculant is added satisfies a predetermined range, The first determination unit includes a first determination module, an acquisition module, a second determination module and a third determination module, wherein the first determination module is used to determine the basic addition amount of the flocculant at least according to the feed concentration and the feed flow rate; the acquisition module is used to obtain the corresponding relationship between the overflow concentration of the coal slurry water and the addition amount of the flocculant; the second determination module is used to determine the addition amount corresponding to the overflow concentration that is the same as the target overflow concentration as the predetermined addition amount according to the target overflow concentration and the corresponding relationship; the third determination module is used to determine the sum of the basic addition amount and the predetermined addition amount as the target addition amount, The first determination module includes an acquisition submodule and a determination submodule, wherein the acquisition submodule is used to acquire a first correction coefficient, a second correction coefficient, the configuration concentration of the flocculant and the optimal dosing value of the flocculant, wherein the first correction coefficient is used to characterize a coefficient related to the target overflow concentration, the second correction coefficient is a coefficient for correcting the difference between the actual basic addition amount and the theoretical basic addition amount, the configuration concentration is used to characterize the concentration value of the flocculant, and the optimal dosing value is determined according to the feed concentration; the determination submodule is used to determine the basic addition amount ,in, is the optimal dosing value, is the feed concentration, is the feed flow rate, For the configuration concentration, is the first correction coefficient, is the second correction coefficient, The acquisition submodule is also used to acquire multiple groups of historical dosing values, historical feed concentrations, and corresponding historical concentration efficiencies; determine that when the feed concentration is equal to the historical feed concentration, the historical dosing value with the highest historical concentration efficiency is the optimal dosing value, The device also includes a second acquisition unit, a second determination unit and a third determination unit, wherein the second acquisition unit is used to obtain the underflow concentration, the underflow solid recovery rate and the underflow liquid mismatch rate after controlling the addition of the target amount of the flocculant to the concentrator, wherein the underflow concentration is used to characterize the concentration of the sedimentation layer after the concentrator performs the concentrating treatment, the underflow solid recovery rate is used to characterize the percentage of the solid amount of the sedimentation layer after the coal slime water is treated by the concentrator to the solid amount in the feed, and the underflow liquid mismatch rate is used to characterize the percentage of the liquid amount of the sedimentation layer after the concentrating treatment by the concentrator to the liquid amount in the feed; the second determination unit is used to determine that the difference between the underflow solid recovery rate and the underflow liquid mismatch rate is the concentration efficiency; the third determination unit is used to determine the clarification coefficient , wherein C is the feed concentration, is the target overflow concentration and is used to evaluate the concentrating effect of the concentrator according to the underflow concentration, the concentrating efficiency and the clarification coefficient.

4. A computer-readable storage medium, It is characterized in that The computer-readable storage medium includes a stored program, wherein the program executes the method of claim 1 or 2.

5. A processor, It is characterized in that The processor is used to run a program, wherein the program executes the method according to claim 1 or 2 when running.

6. A control system for adding flocculants to coal sludge water. It is characterized in that The control system comprises: A controller for executing the method according to claim 1 or 2; A first flow meter, located on the pipeline before the concentrator inlet, the first flow meter is used to provide an inlet flow rate, and the inlet flow rate is used to characterize the flow rate of the coal slurry water before entering the concentrator; A first concentration meter, located on the pipeline before the inlet of the concentrator, the first concentration meter is used to provide a feed concentration, and the feed concentration is used to characterize the concentration of the coal slurry water before entering the concentrator; A turbidity meter located in the thickener, the turbidity meter is used to provide a target overflow concentration, the target overflow concentration is used to characterize the ratio of solids to water in the clarified layer obtained after the coal slime water is treated by the thickener; The adding device is located on another pipeline before the inlet of the concentrator, and the adding device is connected to the controller and the concentrator respectively, and is used to add the target amount of flocculant into the concentrator. The adding device comprises: A second flow meter, used for providing the flow rate of the flocculant; An electric regulating valve is used to adjust the valve opening angle according to the target addition amount so that the flow rate of the flocculant entering the concentrator is the target addition amount, The control system further comprises: The second concentration meter is located on the pipeline corresponding to the underflow outlet of the concentrator, and is used to provide underflow concentration, and the underflow concentration is used to characterize the concentration of the sediment layer after the concentrator performs the concentration treatment.

Images